06. advanced widgetict.edu.mn/uploaded/file_manager/files/06 widget.pdf · project name :...
TRANSCRIPT
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DKU-MUST Mobile ICT Education Center
06. Advanced Widget
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Goal
• Learn how to deal with advanced widget.
• Learn how the View Container and its applications
• Learn how to set the AndroidManiFest.xml
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Analog clock, Digital clock
XML Code Example of the Analog/Digital clock
1. Advanced Widget ▶ Date/Time Widget
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Chronometer
XML Code Example of the Chronometer
1. Advanced Widget ▶ Date/Time Widget
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TimePicker,DatePicker,CalendarView
XML Code Example of TimePicker, DatePicker, CalendarView
캘린더뷰는허니콤(3.0)부터지원됨
1. Advanced Widget ▶ Date/Time Widget
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[Practice 6-1] Create a Date/Time booking App(1/8)
Create a Date/Time Booking(Reservation) App
Using the Date/Time Widget
Project Info.
Project Name : Project6_1
Package Name : com.cookandroid.project6_1
Build SDK : Goolge API 15 or 16
Minimum Required SDK : API 15 or 16
Activity Name : Project6_1Activity
Layout Name : main
1. Advanced Widget ▶ Date/Time Widget
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Design Screen (1/2)
• LinearLayout
Chronometer 1, Button 1
Widget id : chronometer1, btnStart
• RadioGroup
RadioButton 2
RaioButton Widget id : rdoCal, rdoTime
• LinearLayout
CalendarView 1, TimePicker 1 in the FrameLayout
LinearLayout, layout_weight is 1
Widget id : calendarView1, timePicker1
• LinearLayout
Button 1, TextView 10
Button id : btnEnd
TextView id(Odd number of times): tvYear, tvMonth, tvDay, tvHour, tvMinute
1. Advanced Widget ▶ Date/Time Widget
[Practice 6-1] Create a Date/Time booking App(2/8)
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Design the Screen (2/2)
1. Advanced Widget ▶ Date/Time Widget
[Practice 6-1] Create a Date/Time booking App(3/8)
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Java Coding 1
1. Advanced Widget ▶ Date/Time Widget
[Practice 6-1] Create a Date/Time booking App(4/8)
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Java Coding 2
12 widgets on the widget variable assignment.
First, CalendarView, TimePicker Invisible
1. Advanced Widget ▶ Date/Time Widget
[Practice 6-1] Create a Date/Time booking App(5/8)
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Java Coding 3
When you click RadioButton, write the Click Event(Show the eather CalendarView or TimePicker)
1. Advanced Widget ▶ Date/Time Widget
[Practice 6-1] Create a Date/Time booking App(6/8)
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Java Coding 4
Write the Click Listener(event)
When you click the “Reservation Start”, start the Chronometer.
When you click the “Reservation End”, end the Chronometer.
1. Advanced Widget ▶ Date/Time Widget
[Practice 6-1] Create a Date/Time booking App(7/8)
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Java Coding 5
When you click the “Reservation End”,show the TextView(Date, Month, Year – CalenderView setting) and TimePicker(Hour, Minute – TimePicker setting)
1. Advanced Widget ▶ Date/Time Widget
[Practice 6-1] Create a Date/Time booking App(8/8)
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Change the <Practice 6-1>
Change the CalendarView to DatePicker
Delete the “Reservation Start” and “Reservation End”When you click the “chronometer”,reservation start.When you long click the year,acction the reservation end.
Before you click on the Chronometer, RadioButton, DatePicker, TimePickeris not set to visible.When you click the Chronometer,RadioButton visible.When you long click the year,RadioButton, DatePicker, TimePickerinvisible.
[Self Test 6-1]
1. Advanced Widget ▶ Date/Time Widget
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AutoCompleteTextView, MultiAutoCompleteTextView
AutoCompleteTextView
An editable text view that shows completion suggestions automatically while the user is typing. The list of suggestions is displayed in a drop down menu from which the user can choose an item to replace the content of the edit box with.
The drop down can be dismissed at any time by pressing the back key or, if no item is selected in the drop down, by pressing the enter/dpad center key.
The list of suggestions is obtained from a data adapter and appears only after a given number of characters defined by the threshold.
1. Advanced Widget ▶ Other related widget
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AutoCompleteTextView, MultiAutoCompleteTextView
MultiAutoCompleteTextView
An editable text view, extending AutoCompleteTextView, that can show completion suggestions for the substring of the text where the user is typing instead of necessarily for the entire thing.
You must provide a MultiAutoCompleteTextView.Tokenizer to distinguish the various substrings.
1. Advanced Widget ▶ Other related widget
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XML Code Example of AutoCompleteTextView, MultiAutoCompleteTextView
1. Advanced Widget ▶ Other related widget
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Java Code of AutoCompleteTextView, MultiAutoCompleteTextView
1. Advanced Widget ▶ Other related widget
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ProgressBar, SeekBar, RatingBar
1. Advanced Widget ▶ Other related widget
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XML Code Example of ProgressBar, SeekBar, RatingBar
1. Advanced Widget ▶ Other related widget
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ScrollView
Layout container for a view hierarchy that can be scrolled by the user, allowing it to be larger than the physical display. A ScrollView is a FrameLayout, meaning you should place one child in it containing the entire contents to scroll; this child may itself be a layout manager with a complex hierarchy of objects. A child that is often used is a LinearLayout in a vertical orientation, presenting a vertical array of top-level items that the user can scroll through.
You should never use a ScrollView with a ListView, because ListView takes care of its own vertical scrolling. Most importantly, doing this defeats all of the important optimizations in ListView for dealing with large lists, since it effectively forces the ListView to display its entire list of items to fill up the infinite container supplied by ScrollView.
The TextView class also takes care of its own scrolling, so does not require a ScrollView, but using the two together is possible to achieve the effect of a text view within a larger container.
ScrollView only supports vertical scrolling. For horizontal scrolling, use HorizontalScrollView.
2. View Container▶ Simple Function of the View Container
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XML Code Example of ScrollView
2. View Container▶ Simple Function of the View Container
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SlidingDrawer
SlidingDrawer hides content out of the screen and allows the user to drag a handle to bring the content on screen. SlidingDrawer can be used vertically or horizontally. A special widget composed of two children views: the handle, that the users drags, and the content, attached to the handle and dragged with it. SlidingDrawer should be used as an overlay inside layouts. This means SlidingDrawer should only be used inside of a FrameLayout or a RelativeLayout for instance. The size of the SlidingDrawer defines how much space the content will occupy once slid out so SlidingDrawer should usually use match_parent for both its dimensions. Inside an XML layout, SlidingDrawer must define the id of the handle and of the content:
2. View Container▶ Simple Function of the View Container
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SlidingDrawer
Basic Form
2. View Container▶ Simple Function of the View Container
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XML Code Example of SlidingDrawer
2. View Container▶ Simple Function of the View Container
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ViewFlipper
Simple ViewAnimator that will animate between two or more views that have been added to it. Only one child is shown at a time. If requested, can automatically flip between each child at a regular interval.
Basic Form
2. View Container▶ Simple Function of the View Container(Requires Java linkage)
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XML Code Example of ViewFlipper
2. View Container▶ Simple Function of the View Container(Requires Java linkage)
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Java Code Example of ViewFlipper
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
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TabHost
Container for a tabbed window view. This object holds two children: a set of tab labels that the user clicks to select a specific tab, and a FrameLayout object that displays the contents of that page. The individual elements are typically controlled using this container object, rather than setting values on the child elements themselves.
Basic Form
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
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TabHost
Java Code
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
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XML Code Example of TabHost
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
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Java Code Example of TabHost
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
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WebView
A View that displays web pages.
This class is the basis upon which you can roll your own web browser or simply display some online content within your Activity.
It uses the WebKit rendering engine to display web pages and includes methods to navigate forward and backward through a history, zoom in and out, perform text searches and more.
Note that, in order for your Activity to access the Internet and load web pages in a WebView, you must add the INTERNET permissions to your Android Manifest file
- <uses-permission android:name="android.permission.INTERNET" />
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
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[Practice 6-2] Creating a simple web browser (1/8)
Creating a simple web browser
When you type a URL in the edit text, go to the URL
Project Info.
Project Name : Project6_2
Package Name : com.cookandroid.project6_2
build SDK : Goolge API 15 or 16
Minimum Required SDK : API 15 or 16
Activity Name : Project6_2Activity
Layout Name : main
Title : Project6_2
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
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Design of Screen
Add a LinearLayout, - One EditText, Two Botton
Create a WebView at the bottom
Widget Id are edtUrl, btnGo, btnBack, webView1
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
[Practice 6-2] Creating a simple web browser (2/8)
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AndroidManifest.xml (1/2)
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
[Practice 6-2] Creating a simple web browser (3/8)
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AndroidManifest.xml (2/2)
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
[Practice 6-2] Creating a simple web browser (4/8)
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Java coding 1
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
[Practice 6-2] Creating a simple web browser (5/8)
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Java Coding 2
Automatically override the method
Position the mouse cursorin the CookWebViewClient class,Select the Eclipse menu [Source]-[Override/Implements Methods]
Select the shouldOverrideUrlLoading() method
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
[Practice 6-2] Creating a simple web browser (6/8)
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Java coding 3
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
[Practice 6-2] Creating a simple web browser (7/8)
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Adding Internet Permissions in the AndroidManifest.xml
2. View Container▶ Complex Function of the View Container(Requires Java linkage)
[Practice 6-2] Creating a simple web browser (8/8)
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